| Issue |
A&A
Volume 389, Number 1, July I 2002
|
|
|---|---|---|
| Page(s) | 84 - 92 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20020604 | |
| Published online | 14 June 2002 | |
Discovery of two infrared supernovae: A new window on the SN search*
1
Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, Firenze, Italy
2
European Southern Observatory (ESO), Alonso de Cordova 3107, Santiago, Chile
3
C.A.I.S.M.I.-C.N.R., Largo E. Fermi 5, Firenze, Italy
4
Dipartimento di Astronomia, Università di Firenze, Largo E. Fermi 5, Firenze, Italy
5
Telescopio Nazionale Galileo, Aptdo de Correos, 565, 38700 Santa Cruz de La Palma, Canary Islands, Spain
Corresponding author: R. Maiolino, maiolino@arcetri.astro.it
Received:
31
January
2002
Accepted:
28
March
2002
We report the discovery of two supernovae (SNe),
SN 1999gw and SN 2001db, obtained
within the framework of an infrared (2.1 μm) monitoring campaign of
Luminous Infrared Galaxies, aimed at detecting obscured
supernovae. SN 2001db, extinguished by 
mag,
is the first supernova discovered in the infrared that has received
the spectroscopic confirmation. This result highlights the power of
infrared monitoring in detecting obscured SNe and indicates
that optical surveys probably miss a significant fraction of
SNe, especially in obscured systems such as starburst galaxies.
The preliminary estimate of SN rate in Luminous Infrared Galaxies is about an
order of magnitude higher than that expected from optical surveys.
Key words: supernovae: general / supernovae: individual: SN 2001db, SN 1999gw / galaxies: starburst / infrared: galaxies
Based on observations obtained at the ESO-NTT in La Silla, at the ESO-VLT in Paranal and at the Italian Telescopio Nazionale Galileo (TNG) operated on the island of La Palma by the Centro Galileo Galilei of the CNAA (Consorzio Nazionale per l'Astronomia e l'Astrofisica) at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias.
© ESO, 2002
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